why is my 02 chevy express van, 4.3 ltr, suddenly running bad.?

  • Thread starter Thread starter Steve C
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Steve C

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I have lost all power,all at once and it won't idle. I replaced the timing chain and gears, crank sensor, cam sensor, and did a complete tune up. still the same, keep getting a code 1341. someone please help me out here before I waste anymore time and money.
 
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